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Finding the Fourth Proportional to 615,031.20, 922,109.40 and 235,805.40

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Solution

The fourth proportional to 615,031.20, 922,109.40 and 235,805.40 is: 353,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,031.20 : 922,109.40 = 235,805.40 : x
  2. Step 2: Convert to fraction form
    615,031.20/922,109.40 = 235,805.40/x
  3. Step 3: Cross multiply
    615,031.20x = 922,109.40 × 235,805.40
  4. Step 4: Simplify right side
    615,031.20x = 217,438,375,910.76
  5. Step 5: Solve for x
    x = 217,438,375,910.76/615,031.20
  6. Step 6: Final answer
    x = 353,540.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.